Contamination, bioaccessibility and human health risk of heavy metals in exposed-lawn soils from 28 urban parks in southern China's largest city, Guangzhou
文献类型: 外文期刊
作者: Gu, Yang-Guang 1 ; Gao, Yan-Peng 2 ; Lin, Qin 1 ;
作者机构: 1.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Guangzhou 510300, Guangdong, Peoples R China
2.Chinese Acad Sci, Guangzhou Inst Geochem, Guangzhou 510640, Guangdong, Peoples R China
3.Key Lab Fishery Ecol & Environm Guangdong Prov, Guangzhou 510300, Guangdong, Peoples R China
4.Minist Agr, Key Lab South China Sea Fishery Resources Exploit, Guangzhou 510300, Guangdong, Peoples R China
关键词: Urban park soils;Oral bioaccessibility;Health risk;Simple bioavailability extraction test (SBET);Heavy metals
期刊名称:APPLIED GEOCHEMISTRY ( 影响因子:3.524; 五年影响因子:3.932 )
ISSN:
年卷期:
页码:
收录情况: SCI
摘要: The total concentrations and oral bioaccessibility of heavy metals in surface-exposed lawn soils from 28 urban parks in Guangzhou were investigated, and the health risks posed to humans were evaluated. The descending order of total heavy metal concentrations was Fe > Mn > Pb > Zn > Cu > Cr > Ni > Cd, but Cd showed the highest percentage bioaccessibility (75.96%). Principal component analysis showed that Grouped Cd, Pb, Cr, Ni, Cu and Zn, and grouped Cr and Mn could be controlled two different types of human sources. Whereas, Ni and Fe were controlled by both anthropogenic and natural sources. The carcinogenic risk probabilities for Pb and Cr to children and adults were under the acceptable level (<1 x 10(-4)). Hazard Quotient value for each metal and Hazard Index values for all metals studied indicated no significant risk of non-carcinogenic effects to children and adults in Guangzhou urban park soils. (C) 2016 Elsevier Ltd. All rights reserved.
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